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HTML Attribute Extractor

Extract specified attributes (href, src, data-*, etc.) from HTML content with tag name filtering support

Features

Extracts and analyzes HTML attributes from any HTML content:

  • Targeted Extraction: Specify exact attributes to extract (href, src, id, class, etc.)
  • Tag Filtering: Limit extraction to specific HTML elements (a, img, div, etc.)
  • Data Attributes: Support for data-* attributes with wildcard matching
  • URL Analysis: Optional parsing and validation of URL components
  • Statistics: Comprehensive statistics per attribute (count, unique values, empty count)
  • Position Tracking: Line numbers and character positions for source references

Supported Attributes

  • Standard HTML attributes: href, src, alt, title, id, class, etc.
  • Data attributes: data-, data-id, data-custom-, etc.
  • Custom attributes: any attribute present in HTML elements

Use Cases

  • Extract all links from HTML pages
  • Find all image sources
  • Analyze data attributes for analytics tracking
  • SEO link auditing and validation
  • Asset URL extraction and validation
  • HTML structure analysis

Optional: Only extract from specific HTML elements

Extract data-* attributes when specified or using data-* wildcard

Parse URLs into protocol, domain, and path components

Key Facts

Category
Development
Input Types
textarea, select, checkbox
Output Type
json
Sample Coverage
4
API Ready
Yes

Overview

The HTML Attribute Extractor is a tool for extracting specific attributes like href, src, and data-* from HTML content. It supports tag name filtering and provides statistics and position tracking for efficient analysis.

When to Use

  • •When auditing all links on a webpage for SEO optimization and validation.
  • •When extracting image sources and alt texts to verify asset URLs and accessibility.
  • •When analyzing data attributes for custom tracking or analytics implementation.

How It Works

  • •Paste your HTML content into the tool's textarea input.
  • •Select the attributes to extract, such as href, src, or data-*, from the dropdown menu.
  • •Optionally, filter by specific HTML tags like <a> or <img> to narrow down extraction.
  • •The tool parses the HTML and returns a JSON result with extracted values, statistics, and source positions.

Use Cases

SEO link auditing to extract and validate all hyperlinks from HTML pages.
Web development asset management by finding image and script sources for optimization.
Data attribute analysis to review tracking codes or custom data in HTML elements.

Examples

1. Extract All Links for SEO Audit

SEO Specialist
Background
An SEO specialist needs to audit all external and internal links on a website to identify broken links and improve search engine ranking.
Problem
Manually checking each href attribute in the HTML source is inefficient and error-prone.
How to Use
Paste the webpage's HTML content, select the 'href' attribute, and filter by <a> tags to focus on anchor elements.
Example Config
{"attributes": ["href"], "tagFilter": ["a"]}
Outcome
A JSON list of all href values with statistics and line numbers, enabling quick identification of link issues for SEO fixes.

2. Audit Image Alt Texts for Accessibility

Background
A web developer is ensuring all images on a site have proper alt texts to meet accessibility standards.
Problem
Finding all <img> tags and verifying their src and alt attributes manually is time-consuming.
How to Use
Input the HTML, select 'src' and 'alt' attributes, and filter by <img> tags to extract image-related data.
Outcome
Extracted list of image sources and alt texts, highlighting missing or empty alt attributes for accessibility improvements.

Try with Samples

html
HTML with Images Samples
HTML source code samples with images for testing extraction
title token html
sample
Markdown Link Extractor Samples
Sample Markdown documents with various link types for testing the Markdown Link Extractor tool
title token extractor
sample
Phone Number Extractor Samples
Collection of mixed text containing phone numbers from various countries for extraction testing
title token extractor
sample
Changelog Extractor Samples
Various changelog formats for testing changelog parsing and extraction tools
title token extractor
sample

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FAQ

What attributes can I extract?

You can extract standard HTML attributes like href, src, id, class, alt, title, and data-* attributes with wildcard support.

Can I limit extraction to specific HTML tags?

Yes, use the tag filter to extract only from elements like <a>, <img>, <div>, or others.

Does it support data attributes?

Yes, data-* attributes are supported, and you can enable or disable their inclusion with a checkbox.

What output format does the tool provide?

Results are returned in JSON format, including extracted attribute values, counts, unique values, and line positions.

Is URL parsing available?

Yes, you can enable URL component parsing to break down extracted URLs into protocol, domain, and path.

API Documentation

Request Endpoint

POST /en/api/tools/html-attribute-extractor

Request Parameters

Parameter Name Type Required Description
htmlContent textarea Yes -
attributes select No -
tagFilter select No Optional: Only extract from specific HTML elements
includeDataAttributes checkbox No Extract data-* attributes when specified or using data-* wildcard
extractUrlComponents checkbox No Parse URLs into protocol, domain, and path components

Response Format

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
JSON Data: JSON Data

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-html-attribute-extractor": {
      "name": "html-attribute-extractor",
      "description": "Extract specified attributes (href, src, data-*, etc.) from HTML content with tag name filtering support",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=html-attribute-extractor",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]